electrowinning


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electrowinning

(ɪˌlɛktrəʊˈwɪnɪŋ)
n
a means of extracting metal from ore using electrolysis
References in periodicals archive ?
The Luilu site, where KCC's WOL and electrowinning plants are located, successfully produced its first copper cathode on December 11.
Tenders are invited for Design, engineering, manufacture, supply, errection, including civil works, testing & commissioning of electrowinning Unit on turnkey basis.
The upper layers of copper ore deposits are easily processed using hydrometallurgical leach technology, in tandem with solvent extraction and electrowinning to produce high-purity copper metal (i.
Sulfuric acid is widely used leaching medium for both zinc and iron; although it requires electrowinning step for the purification of zinc, whereas sodium hydroxide selectively removes zinc at low concentrations thus avoiding need of electrowinning [3].
This proprietary, new technology (also announced in 2010) uses a wet-chemical, electrowinning process instead of a heat-based smelting process, greatly reducing sulfur dioxide and lead emissions.
The 35 papers consider such topics as the reductive leaching of limonitic laterites using ferrous sulphate, comparing intercell contact bars for electrowinning plants, the mineralogical characterization of cobaltic oxides from the Democratic Republic of Congo, the influence of thermo-mechanical treatment on structures and properties of a cobalt-based superalloy, and the starved acid leaching technology (SALT) for recovering nickel and cobalt from saprolites and Caron plant residues.
This technique uses heap leaching, solvent extraction and electrowinning meaning that the copper will be dissolved out of the rock and then recovered from the solution.
In addition, the company has announced the completion of Stage 2 of the crusher expansion to increase crusher throughput by 8,000 t/d; the replacement of existing conveyors with larger ones to meet increased crushing and stacking capacity; the arrival of a second stacker; the installation of a second carbon strip column to increase carbon strip capacity; modifications to ADR columns to increase efficiency; the expansion of the electrowinning circuit; installation of larger tertiary crusher in main crushing circuit; and installation of new screen in main crushing circuit.
While the technique has various names, such as electrowinning, electrolytic removal/recovery or electroextraction, it all works the same way, by using an electrical current to transform positively charged metal ions (cations) into a stable, solid state where they can be easily separated from the water and removed.
2]) as oxidants at 95[degrees], electrowinning the ([PbSiF.
Smith "Bubble characteristics and aerosol formation in electrowinning cells" Journal of Applied.